feat(pageref route): add route to mappedPageRef

[neo-reply-lukas]

Exactly the case, where you have a pageRef but not its NavigationData at hand. Of course, one could make a subsequent call to NavService, but the required Info is right there

[neo-reply-lukas]

Additionally it's in line with the current Dataset Mapping, where route and routes get mapped as well

[github-actions[bot]]

:tada: This PR is included in version 10.20.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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